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ECM motor failures

Has anyone seen the SNTech brand motors and modules in new rooftop equipment and if so have you had any failures? I have had a slew of them between 2 jobs fail. Replace them and the new ones are failing within a week. Voltage on both jobs is well within +/-10%. Motor manufacturer said original modules were weak so they built a more robust model and those are failing also.

Has anyone seen the SNTech brand motors and modules in new rooftop equipment and if so have you had any failures? I have had a slew of them between 2 jobs fail. Replace them and the new ones are failing within a week. Voltage on both jobs is well within +/-10%. Motor manufacturer said original modules were weak so they built a more robust model and those are failing also.

I really dont know much about these so called "green" motors as I have a friend who runs a CC supply house and he tells me things, in fact he told me of the acetyline shortage last year due to an explosion. He does not sell the SNTech motors (http://sntech.com/), but I heard him talking about them one day and I asked him about them and he said they were delicate. DELICATE ! I mean......... do we EVER use that word? LOL - He told me to stay away from them and he takes the time to stay informed, a REAL sharp AC Tech, in fact he's so strong on electrical diagnosis of HVAC parts that I wish I was as good. And sure I can ohm and amp and all that; he can figure tables in his head simply using ohm's law. I have to throw these things on paper see them. You know it's ALL about the mighty dollar. WHO can take it from you and put it in their pocket. If a motor has the Emerson Logo on it or a humidifyer says Honeywell on it, then I feel I'm in good hands. Thats all I know, but was enough for me. Good Luck!

Thanks been..... My controls contractor said he put two units in heat mode the other night and within five minutes of warm air passing over the motor, they failed. This is a topic of much frustration and no answer in sight. I appreciate your insight.

Its better for the company that contracted your work to pay for a better motor and look into a class action suit, than to pay you weekly to replace motors on warranty and never have climate control. Your not going to find the magic answer on those motors, its a flaw by a company that has'nt even sold their product for a year yet and did'nt do any field trials. If they make it a few years and work out the bugs, it could turn into a hell of company but bad way to start. Cut your losses.